Name: aaR10142 Date: 02/12/2001



The jnlp javadoc says:
"
public long create(java.net.URL url,
                   long maxsize)
            throws java.net.MalformedURLException,
                   java.io.IOException
....

Throws:
          java.io.IOException - if an I/O exception occurs,
          or the entry already exists.
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"

The create mathod does not throw IOException when application, call it to
times with the same URL(try to create entry that already exists).

See example

------------- test.jnlp ----------
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="0.2+" version="1.0"
  codebase="http://falcon:12345">
  <information>
    <title>Test</title>
    <vendor>Sun Microsystems, Inc.</vendor>
    <homepage href="index.html"/>
    <description>Test</description>
  </information>
  <resources>
    <j2se version="1.3 1.2"/>
    <jar href="main.jar"/>
  </resources>
  <application-desc main-class="Main">
  </application-desc>

</jnlp>

--------------Main.java----------------
import java.awt.Frame;
import java.awt.Label;
import java.io.*;
import java.net.*;
import javax.jnlp.*;

public class Main {
    public static void main(String[] args) {

   int n = 1;
    String status = "INCORRECT: No IOexception thrown";
    URL codebase = null;

    String name = "javax.jnlp.PersistenceService";
    PersistenceService service = null;
    try {
        service = (PersistenceService)ServiceManager.lookup(name);
        codebase = getBase();
    } catch (ClassCastException e) {
       e.printStackTrace();
        status = "Exception: " + e;
    } catch (UnavailableServiceException e) {
       e.printStackTrace();
        status = "Exception: " + e;
    }

    URL url = null;
          

    // Start the test
    try {
        url = new URL(codebase, "Test3.txt");
        service.create(url, 100l);
         //try to create duplicate entry
n++;
        service.create(url, 100l);
        status = "INCORRECT (create call #2): Exception was not thrown";
       
    } catch (MalformedURLException mue) {
        status = "CORRECT (create call #" + n +
"): MalformedURLException was thrown: " + mue;
    } catch (IOException ioe) {
        status = "CORRECT (create call #" + n +
"): Exception was thrown: " + ioe;
    }

         Frame f = new Frame("Test");
         f.add(new Label(status));
         f.setSize(300, 100);
         f.setVisible(true);
                  
    }


    static URL getBase() throws UnavailableServiceException{
        URL codebase;
        String name = "javax.jnlp.BasicService";
        BasicService service = (BasicService)ServiceManager.lookup(name);
        codebase = service.getCodeBase();
        return codebase;
    }

}

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